#!/usr/bin/env python

import sys      
import os  


if __name__ == "__main__":
	if not len(sys.argv) == 3:
		print("Usage: python name.py NUM")
	else:
		n_start = int(sys.argv[1])
		n_end = int(sys.argv[2])
		for i in range(n_start,n_end):
			print("mask/image_mask" + str(i) + ".png")
